Middle English plentevous

← Old French plentiveus (borrowed)

← Old French plentif (mention)

← Old French plenté (mention)

← Proto-Indo-European *pl̥h₁nós (derived)

← Latin plenitatem (derived)

← Latin plenitas (mention)

← Latin plenus (mention)

→ English plenteous (mention)

→ Middle English plentevously (suffix)